snapshot-nsset: take a snapshot of a domain's nameserver set

Description

Query domain for its name server set.

This is the second tool in the respdiff query filter toolchain. It's purpose is to provide a current name server set for each domain as obtained by a <DOMAIN> NS query.

Example

respdiff-rs [--lmdb <ENVDIR>] snapshot-nsset [DOMAIN...]

Input

• domain name(s)

Output

LMDB nssets

• Write value <NS1_domain><NS2_domain>...<NS3_domain> for key domain

Operation

• for each domain:
  • query domain NS
  • sort and serialize name server domain names
  • write domain: <NS1_domain><NS2_domain>...<NS3_domain> to LMDB nssets

Future

• also write LMDB nameservers: NS_domain: <IP1><IP2>...<IPn>
• probe-nsip utility to get IPset for name server domain